Shoutbox

My uni has XP set to ave only the log-of button on some of the computers so I'm guessing it is something you can turn on and off, just have to search the net a little.

EDIT:
looks to e a registry (click for more info about removing the shutdown button).  I don't seem to have the entry in my registry so I would assume it safe to delete if you do have it (though I would like confirmation of this).